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Screw devices used to treat fractures of the femoral neck are usually positioned under image-intensifier control, using anteroposterior and lateral views. The volume projected by these views is over 27% larger than the femoral head; the tips of screws so placed may be outside the femoral head. This can be avoided by placement within the central two-thirds of the head: we have designed a template which can confirm safe placement.


Journal article


The Journal of bone and joint surgery. British volume

Publication Date





448 - 449


Department of Orthopaedic Surgery, Middlesex Hospital, London, UK.


Humans, Femoral Neck Fractures, Image Enhancement, Anthropometry, Fracture Fixation, Internal, Retrospective Studies, Bone Screws, Mathematics